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<a name="Constants"></a>
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<p>
Next: <a href="Symbolic-Constants.html#Symbolic-Constants" accesskey="n" rel="next">Symbolic Constants</a>, Up: <a href="Expressions.html#Expressions" accesskey="u" rel="up">Expressions</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="LD-Index.html#LD-Index" title="Index" rel="index">Index</a>]</p>
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<a name="Constants-1"></a>
<h4 class="subsection">3.10.1 Constants</h4>
<a name="index-integer-notation"></a>
<a name="index-constants-in-linker-scripts"></a>
<p>All constants are integers.
</p>
<p>As in C, the linker considers an integer beginning with &lsquo;<samp>0</samp>&rsquo; to be
octal, and an integer beginning with &lsquo;<samp>0x</samp>&rsquo; or &lsquo;<samp>0X</samp>&rsquo; to be
hexadecimal.  Alternatively the linker accepts suffixes of &lsquo;<samp>h</samp>&rsquo; or
&lsquo;<samp>H</samp>&rsquo; for hexadecimal, &lsquo;<samp>o</samp>&rsquo; or &lsquo;<samp>O</samp>&rsquo; for octal, &lsquo;<samp>b</samp>&rsquo; or
&lsquo;<samp>B</samp>&rsquo; for binary and &lsquo;<samp>d</samp>&rsquo; or &lsquo;<samp>D</samp>&rsquo; for decimal.  Any integer
value without a prefix or a suffix is considered to be decimal.
</p>
<a name="index-scaled-integers"></a>
<a name="index-K-and-M-integer-suffixes"></a>
<a name="index-M-and-K-integer-suffixes"></a>
<a name="index-suffixes-for-integers"></a>
<a name="index-integer-suffixes"></a>
<p>In addition, you can use the suffixes <code>K</code> and <code>M</code> to scale a
constant by
<code>1024</code> or <code>1024*1024</code>
respectively.  For example, the following
all refer to the same quantity:
</p>
<div class="smallexample">
<pre class="smallexample">_fourk_1 = 4K;
_fourk_2 = 4096;
_fourk_3 = 0x1000;
_fourk_4 = 10000o;
</pre></div>

<p>Note - the <code>K</code> and <code>M</code> suffixes cannot be used in
conjunction with the base suffixes mentioned above.
</p>



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